Reviews: Superior Radiant Products Shop Heater

I had debated for a long time to find the best solution to heat my garage shop at home.
Forced air is no good since the filters will be clogged with dust all of the time, and a heater that burns the shop air has too many drawbacks including humidity control, possible fires, and consumption of oxygen in the room.
I decided that whatever heater I get had to use outside air and vent outside. My choice was this radiant tube heater from SRP. I have it hung and in the photo was still testin...